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Disease affects an organism by disrupting the organism's homeostasis. Homeostasis is the process by which an organism maintains a steady internal environment (stable body temperature, blood sugar level, electrolyte balance, etc.). A disease will disrupt this process. For example, Helicobacter pylori (the bacteria responsible for most stomach ulcers in humans) disrupts homeostasis by interfering with the production of the mucus layer that protects the stomach lining cells from the hydrochloric acid in the stomach lumen.
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Answer:
Orchids have some unique features which help them in the evolutionary race. They produce masses of pollen (which improves the chances of pollination), very light seeds (which makes them easier to spread) and can grow on other plants using them to support their own growth.
A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria, A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance.